package com.sky.service.impl;

import com.sky.context.BaseContext;
import com.sky.dto.ShoppingCartDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.ShoppingCart;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SeatMealDishMapper;
import com.sky.mapper.SeatMealMapper;
import com.sky.mapper.ShoppingCartMapper;
import com.sky.service.ShoppingCartService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class ShoppingCartServiceImpl implements ShoppingCartService {

    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SeatMealMapper seatMealMapper;

    @Override
    public void add(ShoppingCartDTO shoppingCartDTO) {
        ShoppingCart shoppingCart = new ShoppingCart();
        BeanUtils.copyProperties(shoppingCartDTO, shoppingCart);
        shoppingCart.setUserId(BaseContext.getCurrentId());
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        if (list != null && list.size() == 1) {
            ShoppingCart shoppingCart1 = list.get(0);
            shoppingCart1.setNumber(shoppingCart1.getNumber() + 1);
            shoppingCartMapper.update(shoppingCart1);
        } else {
            Long dishId = shoppingCart.getDishId();
            if (dishId != null) {
                //菜品添加到购物车
                Dish dish = dishMapper.getById(dishId);
                shoppingCart.setName(dish.getName());
                shoppingCart.setImage(dish.getImage());
                shoppingCart.setAmount(dish.getPrice());
            } else {
                //套餐添加到购物车
                Setmeal setmeal = seatMealMapper.getId(shoppingCart.getSetmealId());
                shoppingCart.setName(setmeal.getName());
                shoppingCart.setAmount(setmeal.getPrice());
                shoppingCart.setImage(setmeal.getImage());
            }
            shoppingCart.setNumber(1);
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCartMapper.insert(shoppingCart);
        }


    }

    @Override
    public List<ShoppingCart> list() {
        Long currentId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = ShoppingCart.builder().userId(currentId).build();
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        return list;
    }

    @Override
    public void clean() {
        Long currentId = BaseContext.getCurrentId();

        shoppingCartMapper.deleteByUserId(currentId);

    }

   /* @Override
    public void sub(ShoppingCartDTO shoppingCartDTO) {
        ShoppingCart shoppingCart = new ShoppingCart();
        BeanUtils.copyProperties(shoppingCartDTO, shoppingCart);
        shoppingCart.setUserId(BaseContext.getCurrentId());
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        if (list != null && list.size() > 0) {
            ShoppingCart shoppingCart1 = list.get(0);
            if (shoppingCart1.getNumber() == 1) {
                shoppingCartMapper.deleteById(shoppingCart1.getId());
            } else {
                shoppingCart1.setNumber(shoppingCart1.getNumber() - 1);
                shoppingCartMapper.updateNumberById(shoppingCart1);
            }

        }
    }*/
   @Override
   public void sub(ShoppingCartDTO shoppingCartDTO) {
       ShoppingCart shoppingCart = new ShoppingCart();
       BeanUtils.copyProperties(shoppingCartDTO,shoppingCart);
       //设置查询条件，查询当前登录用户的购物车数据
       shoppingCart.setUserId(BaseContext.getCurrentId());

       List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);

       if(list != null && list.size() > 0){
           shoppingCart = list.get(0);

           Integer number = shoppingCart.getNumber();
           if(number == 1){
               //当前商品在购物车中的份数为1，直接删除当前记录
               shoppingCartMapper.deleteById(shoppingCart.getId());
           }else {
               //当前商品在购物车中的份数不为1，修改份数即可
               shoppingCart.setNumber(shoppingCart.getNumber() - 1);
               shoppingCartMapper.updateNumberById(shoppingCart);
           }
       }
   }

}
